<template>
  <div id="app">
<ul>
  <li v-for="item in myArr" :key="item">{{item}}</li>
</ul>
<button @click="btn">走一走</button>
  </div>
</template>

<script>
export default {
  data () {
    return {
      myArr: ['帅哥', '美女', '程序员']
    }
  },

  methods: {
    btn () {
      // 头部数据加入到末尾
      this.myArr.push(this.myArr[0])
      // 再把头部的数据删除掉
      this.myArr.shift()
    }
  }
}
</script>

<style scoped lang='less'>

</style>
